Reliability and security
Strict typing, fine-grained access control and proven libraries make it a common choice in banking, insurance, healthcare and other sectors where errors are costly.
Expertise · Java
Java Development: business applications built to last
Etixio delivers custom Java development for your services and business applications: APIs, back ends, integrations with your information system and data processing. We build new applications, take over and modernize existing ones, and add production-ready AI features to them.
Understanding the technology
Java in your project.
Java is used to build business applications and services, with an extensive ecosystem of libraries and frameworks. It often sits at the core of systems that must evolve over several years. Our work focuses on domain rules, data exchanges and how the code will evolve.
The strengths for your product
Why choose Java?
Java remains one of the pillars of enterprise applications. A mature, typed and well-tooled language, it suits APIs, business platforms and systems that support sensitive operations and must be maintained for a long time.
Performance and scalability
The JVM, multithreading and, since Java 21, virtual threads make it possible to handle large volumes of requests and concurrent processing.
A complete ecosystem
Spring Boot, Jakarta EE or Quarkus to structure services; Kafka, gRPC and OpenAPI for exchanges between systems.
Portable and cloud-ready
A Java application runs just as well on your servers as on AWS, Azure or GCP, in containers or on virtual machines.
A predictable roadmap
Long-term support (LTS) releases and a large community provide visibility for planning version upgrades.
Our scope of work
The work we take on.
Business services
Define responsibilities and interfaces between components.
Data & exchanges
Organize transactions, APIs and asynchronous processing.
Evolution
Prepare regression tests and dependency and JDK migrations.
What we build
The Java projects we deliver.
Custom APIs and back ends
Secure, documented APIs for your web, mobile or SaaS applications.
Integrations and connectors
Exchanges with the ERP, CRM or service bus to unify the data in your information system.
Event-driven architectures
Decoupled processing with Kafka or RabbitMQ when volumes or domain separation justify it.
Modernizing existing applications
Taking over a monolith, upgrading the JDK and framework, and gradually splitting it up when business boundaries are clear.
Business applications and portals
B2B or B2C platforms tailored to your internal processes and your customers’ journeys.
Data processing and batch jobs
Automated imports, calculations, reconciliations and exports, run and monitored in the background.
Our Java expertise
The Java ecosystem we master.
Frameworks
Spring Boot and Spring Cloud for services and their configuration, Jakarta EE for standardized enterprise applications, Quarkus when startup time matters.
Data & messaging
Hibernate / JPA for persistence, PostgreSQL, MySQL or MongoDB depending on the data model, Kafka and RabbitMQ for asynchronous exchanges.
APIs, build & quality
REST and GraphQL APIs, Maven or Gradle, testing with JUnit, code reviews and static analysis in the continuous integration pipeline.
DevOps & cloud
Docker, Kubernetes, GitHub or GitLab pipelines, deployment on AWS or Azure.
Java and AI
Integrating AI into your Java applications.
Many information systems run on Java. Rather than building AI on the side, we integrate it into the existing application: an assistant within business screens, search across your documents, data extraction from incoming files, classification or summarization. Libraries such as Spring AI or LangChain4j make it possible to call models from the JVM; the main work remains around the model: access rights, logging, evaluations, error handling and cost management.
We also take over AI prototypes to make them production-ready. See our enterprise AI solutions.
In the field
From technology to real-world use.
On a B2B platform, a single operation can span several components: partner account, catalog, order and exchanges with an external service. We define responsibilities, transactions and recovery options. Java is one of the technologies used on the Gorilla project, alongside React and Flutter.
The choices that matter
The choices to examine before building.
A durable architecture does not automatically mean microservices. We examine business boundaries, dependencies and deployment needs before splitting components. JDK or framework changes are prepared with representative tests and verification of the runtime environment.
From work to deliverables
Delivery your team can take over.
The scope of the engagement specifies the components to build or take over and the acceptance criteria. We prepare what is needed to understand the changes, verify them and continue the work.
- Services and API contracts
- Business rule tests
- Deployment procedures
Frequently asked questions
Java development: your questions.
Why use Java for an enterprise application?
Java is a reference technology for critical applications thanks to its stability, security and scalability. It suits business platforms, APIs and services that must be maintained and extended for many years.
Which Java framework should you choose (Spring Boot, Quarkus, Micronaut)?
Spring Boot remains the reference for most enterprise applications, thanks to its ecosystem. Quarkus and Micronaut are worth considering for cloud services that require fast startup and low memory usage. The choice depends on your architecture, your operational constraints and the skills of the team that will maintain the code.
Can an existing Java application be modernized?
Yes. We start by securing the existing system with tests, then upgrade the JDK and framework versions and, if business boundaries justify it, gradually extract services. Modernization happens in stages, without major disruption to the system in place.
Should you move to microservices?
Not necessarily. A well-structured monolith is often simpler to operate. Microservices make sense when domains evolve at different paces or have distinct load requirements.
How long does it take to develop a Java project?
A first usable scope can be delivered in a few weeks depending on complexity; a full project spans several months with incremental releases. Project scoping sets a realistic scope and schedule.
How do you ensure quality on a Java project?
Automated tests (JUnit and integration tests), systematic code reviews, continuous integration and production monitoring. A tech lead oversees the architecture and anticipates risks throughout the releases.
Can AI features be added to a Java application?
Yes. Model calls, document search and agents are integrated as application services, with the same security, testing and monitoring rules as the rest of the code. We can also take over an existing AI POC and bring it to production.
How much does a Java project cost?
It depends on the scope, the complexity and the collaboration model. We offer a fixed-price project for a defined scope, or a dedicated team based in Madagascar and Mauritius to evolve the application over time.
Let’s talk about your technical context.
Tell us about the application, the issue to address and the known constraints. We will review the dependencies and the first scope of work with your team.